only competent people may work ‘live’
d. State the advantages conduit trunking and tray cable enclosure
system for commercial installation such shopping centre.
23. earth fault loop impedance
c. the industrial type
b. protected from overcurrent
c.
20. only instructed and skilled people may work ‘live’. Use sketch with notes explanation show how mini-trunking and
skirting trunking could used contain all the electrical supplies a
school’s computing classroom.
. polarity test.
21. IPX7 protection
d. protected additionally RCD
d. The Electricity Work Regulations state that:
a.365
U W
6 6
2 2
C1
L1 C1
2
C3
4
5
6
To phase supply
To phase motor
19. continuity test
b. RCD protection
c. one may work ‘live’
c. everyone may work ‘live’
b. Use sketch with notes explanation show the earthing and
protective bonding arrangements the mains intake position a
230V cable sheath supply. overcurrent protection
b. Zone protection.
22. All final circuits bathroom, both power and lighting, must have:
a.
27. functional test
d. Compare PVC/SWA cables with cables and give their advantages,
disadvantages and typical applications.
24.
26. The socket outlet must be:
a.
25. Every caravan pitch must have least one 16A socket outlet for
connection caravan. Identify from the list below the test which used verify that all fuses,
circuit breakers and switches are connected the line conductor:
a. buried depth 600mm. Use sketch with notes explanation show the earthing and
protective bonding arrangements the mains intake position a
230V system
